What causes trailer brakes to overload?
The OL or overload error code indicates a short in the brake output circuit. Due to its intermittent nature, I’m suspecting a loose connection or a worn wire in the brake controller’s output circuit. Try unplugging the trailer and activating the manual brake switch on the controller.
How do I know if my trailer brake magnets are bad?
Check the amperage. If the amperage is greater than the specified amount (see specifications below), replace the magnet. If the reading is less than the specified amount, the leads are bad and the magnet should be replaced.
How do I know if my trailer brakes are working?
The easiest way to tell if the brakes are working on the trailer would be engage the manual override and have a friend sit outside the vehicle and watch the wheels on the trailer. If they begin to drag when you let off the brake pedal (slowly) on the tow vehicle then you know they are working.
How do you adjust drum brakes on a trailer?
Trailer brakes can be adjusted by turning the star wheel adjuster with a brake spoon. Prying the spoon down will tighten the brake pads against the brake drums. Prying upward will loosen the pads. The star wheel adjuster should be tightened so that the trailer tire turns freely and a slight scraping sound is heard.
When should I replace my trailer brake magnet?
The edge of the magnet should be parallel to the straight edge all the way across. Any pitting or changes in the magnet’s surface indicate abnormal wear and the magnet should be replaced. 3. Inspect the magnet for grease or oil residue, if any is found replace the magnet.
Do trailer brake magnets get weak?
Not uncommon for electric brake magnets to short out and be weak. I have seen them where the magnet had worn against the drum enough for the magnet to short out to the drum.
Why won’t my electric trailer brakes lock up?
Expert Reply: This could be a magnet wiring problem. It is unlikely that the magnets are bad on newer assemblies, but if the wiring is not properly connected, it could cause problems. Check to see that the magnets are properly grounded to a clean, bare metal surface free of corrosion.
Where is the adjuster on a drum brake?
The drum brake adjuster is located under an access cover in the back of the drum brake. Using the screwdriver, gently pry out the rubber grommet that protects this access cover. Step 2: Adjust the star wheel.
When to take a brake drum out of service?
Brake drums wear evenly under normal operating conditions. Use fleet history, if available, to determine the approximate wear rate of tractor drums. Normal wear is the most common reason to remove a brake drum from service. What is Deep or Excessive Wear?
Why are the bolts on my brake drum worn out?
The brake drum bolt holes are worn, usually because the bolts were not tightened to the correct torque specification. Drum pilots may also be worn, and runout in the brake drum may have occurred. The mating hub or wheel pilots may be extensively damaged.
How is a brake drum puller attached to a wheel?
Place each of the brake drum puller’s 3 hooks evenly around the brake drum’s flange. Ensure that the screw in the middle of the brake drum puller lies above the middle of the wheel hub. Use a screwdriver to attach the brake drum puller’s screw tightly. Tighten the screw until the brake drum puller is securely fastened around the brake drum.
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